User Review: Marmot Hydrogen
Fill: 850 down
Temperature Rating: Says 30 degrees but better 40 degree bag
Weight: 28 oz
Price Paid: $280
I wanted an ultralight down bag, comfortable to 30°, to camp at 12,000 foot elevations in the summer. The 30° Marmot Hydrogen, high loft down sleeping bag seemed to fit the bill.
On 2 nights it got down to 37°. It was a cold night’s sleep. On Marmot's website they rate the bag 39.2° for a comfortable night’s sleep, 30° at the lower limit. While I would have made it at 30°, it wouldn’t have been a good night’s sleep.
I like everything about the bag except being cold. I am going to get the Marmot Helium, a 15° bag with a comfort rating of 27.7°. These are both great bags but if you like to sleep warm in high country summers and do ultralight backpacking, go for the extra 4 oz of down and get the Helium.